The state-of-art of microstructural evolution of bearing materials under Rolling Contact Fatigue

Xiulin, Zheng; Zhang, Yongzhen; Du, Shigui

doi:10.1080/02670836.2019.1679524

Cited by 8 publications

(3 citation statements)

References 105 publications

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“…Internal crack was found in 07# MnS inclusion at 0.3 mm section of plate specimen and extended to the matrix interface ( Figure 12 ). Crack is the precondition of WECs [ 1 ], it is the result of cumulative effect caused by cyclic compression load. In the material of wind turbine bearing after service, a butterfly-like microstructure starting from MnS was found [ 39 ].…”

Section: Resultsmentioning

confidence: 99%

“…Up to now, four kinds of feature microstructures, butterfly, white etching cracks (WECs), dark etching region (DER) and white etching bands (WEBs) have been found. The first two are related to cracks while the others are not [ 1 ]. Butterfly and WECs are white etching area (WEA) associated microstructures produced by the interaction of materials on both sides of the crack or inclusion-matrix interface under cyclic stress.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary Research on Response of GCr15 Bearing Steel under Cyclic Compression

Xiulin

Zhang

2020

Materials

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During the bearing service, a series of microstructural evolutions will arise inside the material, such as the appearance of feature microstructures. The essential reason for the microstructural evolution is the cumulative effect of cyclic stress. The Hertz Contact formula is usually adopted to calculate the internal stress, and there is a correlation between the shape and distribution of the feature microstructure and the stress distribution. But it is insufficient to explain the relationship between the morphology of feature microstructures and the rolling direction, such as specific angles in butterfly and white etching bands. The rolling phenomenon will cause the asymmetry of stress distribution in the material, which is the source of the rolling friction coefficient. Moreover, slipping or microslip will produce additional stress components, which also cause the asymmetry of the stress field. However, there is no experimental or theoretical explanation for the relationship between the asymmetry of the stress field and the feature microstructure. According to the current theory, the appearance of feature microstructures is caused by stress with or without rolling. Therefore, it is of great significance to study the formation mechanism: whether feature microstructures will appear in the uniaxial cyclic compression stress field without rolling. In this paper, uniaxial cyclic compressive stress was loaded into a plate-ball system and a cylinder system. The characteristics of microstructural change of bearing steel (GCr15) were studied. It was found that the hardness of the material increased after the cyclic compressive load, and the inclusions interacted with the matrix material. In the local microregion a white etching area was found, although the scale is very small. No large-scale feature microstructures appeared. Other phenomena in the experiment are also described and analyzed. For example, the production of oil film in the contact area and the changing law of alternating load.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preliminary Research on Response of GCr15 Bearing Steel under Cyclic Compression

Xiulin

Zhang

2020

Materials

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“…Considering the correlation between the depth where DER occurs and the depth of maximum shear stress it is plausible to assume that martensite decay is driven by a process of stress-assisted diffusion. This approach has been successfully applied to explain martensite decay in bearings [19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Atomistic simulation of martensite decay

Oila

2022

Modelling Simul. Mater. Sci. Eng.

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Molecular dynamics simulations were used to study the phenomenon of martensite decay in gears by deforming a grinding mark subjected to contact stresses exerted by a rigid plate. The velocities imposed on the rigid plate and the interatomic potential chosen to represent the interactions between the rigid plate and the grinding mark allow for a realistic representation of an elastohydrodynamic contact with an average friction coefficient of 0.05 and all values below 0.1. Due to the initial plastic deformation the height of the grinding mark reduces significantly between two loading cycles, consequently, during the second loading cycle the deformation is predominantly elastic and dislocations only nucleate during the first loading cycle. The diffusion of carbon atoms from the grinding mark leads to the formation of plate-like regions depleted in carbon and precipitation of cementite, the products of martensite decay, as observed experimentally.

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Fatigue failure mechanism of high-speed train bearing steel after long-term service

Li,

Zhao,

Yang

et al. 2024

Engineering Failure Analysis

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The state-of-art of microstructural evolution of bearing materials under Rolling Contact Fatigue

Cited by 8 publications

References 105 publications

Preliminary Research on Response of GCr15 Bearing Steel under Cyclic Compression

Preliminary Research on Response of GCr15 Bearing Steel under Cyclic Compression

Atomistic simulation of martensite decay

Fatigue failure mechanism of high-speed train bearing steel after long-term service

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